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You searched for: subject:"quantum field theory"
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[texts]Mathematical ideas and notions of quantum field theory - Pavel Etingof
Mathematical ideas and notions of quantum field theory Lecture Notes Collection FreeScience.info ID976 Obtained from http://www-math.mit.edu/~etingof/lect.ps http://www.freescience.info/go.php?pagename=books&id=976
Keywords: Quantum Field Theory
Downloads: 13
[texts]Quantum theory of fields
http://uf.catalog.fcla.edu/uf.jsp?st=UF023650264%26ix=pm%26I=0%26V=D%26pm=1
Keywords: Quantum field theory
Downloads: 28
[texts]Introduction to theory of Quantized Fields - Bogoliubov/Shirkov
Classic work on QFT by great Russian Theorist
Keywords: Quantum field Theory/QFT/Renormalization
Downloads: 744
[texts]Quantum Field Theory - Itzykson/Zuber
Pedagogical introduction to Quantum field Theory-Modern Classic
Keywords: Quantum field Theory/QFT/Renormalization
Downloads: 1,888
[texts]Understanding confirmed predictions in quantum gravity - Nigel B. Cook
Feynmanâs relativistic path integral replaces the non-relativistic 1st quantization indeterminancy principle (required when using a classical Coulomb field in quantum mechanics) with a simple physical mechanism, multipath interference between small mechanical interactions. Each mechanical interaction is represented by a Feynman Moller scattering diagram (Fig. 1) for a gauge boson emitted by one charge to strike an effective interaction cross-section of the other charge, a cross-sectionl that is...
Keywords: quantum gravity; general relativity; quantum field theory
Downloads: 128
[texts]Geometry and Quantum Field Theory- Chapter 9 Fermionic Integrals - Pavel Etingof
One may consider systems of classical particles or �elds some of which are bosonic and some fermionic. In this case, the space of states will be a supervector space, i.e. the direct sum of an even and an odd space (or, more generally, a supermanifold � a notion we will de�ne below). When such a theory is quantized using the path integral approach, one has to integrate functions over supermanifolds...
Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 10
[texts]Geometry and Quantum Field Theory- Chapter 5 the Euler Characteristic of the Moduli Space of Curves - Pavel Etingof
Matrix integrals (in particular, computation of the polynomial Pm(x)) can be used to calculate the orbifold Euler characteristic of the moduli space of curves. This was done by Harer and Zagier in 1986. Here we will give a review of this result (with some omissions).
Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 9
[texts]Geometry and Quantum Field Theory- Chapter 6 Matrix Integrals and Counting Planar Diagrams - Pavel Etingof

Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 10
[texts]Geometry and Quantum Field Theory- Chapter 11 Free Field Theories in Higher Dimensions - Pavel Etingof

Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 9
[texts]Geometry and Quantum Field Theory- Chapter 10 Quantum Mechanics For Fermions - Pavel Etingof
Fermionic quantum mechanics. Let us now pass from �nite dimensional fermionic integrals to quantum mechanics, i.e. integrals over fermionic functions of one (even) real variable t.
Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 9
[texts]Quantum field theoretic techniques and the electromagnetic properties of a uniformly magnetized electron gas (Volume NBS Technical Note 207) - Steinert, Leon A.
Field theoretic operators for the charge, rho, and current J, densities of the electron gas were obtained using the Darwin Hamiltonian in 'second quantized' form.Temperature dependent Green's functions were formed from certain averaged combinations of the
Keywords: Electron gas; Quantum field theory; Magnetohydrodynamics
Downloads: 118
[texts]Geometry and Quantum Field Theory- Chapter 3 Feynman Calculus - Pavel Etingof

Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 11
[texts]Geometry and Quantum Field Theory- Chapter 4 Matrix Integrals - Pavel Etingof

Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 11
[texts]Geometry and Quantum Field Theory- Chapter 7 Quantum Mechanics - Pavel Etingof
So far we have considered quantum �eld theory with 0-dimensional spacetime (to make a joke, one may say that the dimension of the space is _1). In this section, we will move closer to actual physics: we will consider 1-dimensional spacetime, i.e. the dimension of the space is 0. This does not mean that we will study motion in a 0-dimensional space (which would be really a pity) but just means that we will consider only point-like quantum objects (particles) and not extended quantum objects (...
Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 16
[texts]Geometry and Quantum Field Theory- Chapter 2 the Steepest Descent and Stationary Phase Formulas - Pavel Etingof

Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 7
[texts]Geometry and Quantum Field Theory- Chapter 8 Operator Approach to Quantum Mechanics - Pavel Etingof
In mechanics and �eld theory (both classical and quantum), there are two main languages � La-grangian and Hamiltonian. In the classical setting, the Lagrangian language is the language of vari-ational calculus (i.e. one studies extremals of the action functional), while the Hamiltonian language is that of symplectic geometry and Hamilton equations. Correspondingly, in the quantum setting, the Lagrangian language is the language of path integrals, while the Hamiltonian language is the languag...
Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 10
[texts]Dispersion relations and the abstract approach to field theory - Klein, Lewis
http://uf.catalog.fcla.edu/uf.jsp?st=UF022904118%26ix=pm%26I=0%26V=D%26pm=1
Keywords: Quantum field theory; Dispersion; Dispersion relations
Downloads: 11
[texts]Geometry and Quantum Field Theory- Chapter 1 Generalities on Quantum Field Theory - Pavel Etingof
Remark. This discussion assumes that the extremum of S at q is actually a minimum, which we know is not always the case.
Keywords: Physics; Quantum Physics; Quantum Field Theory; Physics
Downloads: 9
[texts]Elementary Quantum Field Theory - Ernest M. Henley

Keywords: general mechanics; physics; quantum field theory
Downloads: 263
[texts]Disordered conductors in a random matrix formulation and the connection to complex systems - Blecken, Carsten
http://uf.catalog.fcla.edu/uf.jsp?st=UF027588596%26ix=pm%26I=0%26V=D%26pm=1
Keywords: Statistics--Mathematical models; Quantum field theory--Mathematical models
Downloads: 68
[texts]Symmetry of physical laws. Part 2 : Q-number theory of space-time inversions and charge-conjugation Q-number theory of space-time inversions and charge-conjugation. - Watanabe, Satoshi, 1910-

Keywords: Physics--Formulae; Space and time; Quantum field theory
Downloads: 46
[texts]Aspects of Quantum Theory - Abdus Salam & Eugene P. Wigner
Abdus Salam & Eugene P. Wigner Aspects of Quantum Theory Cambridge University Press 1972 Acrobat 7 Pdf 12.6 Mb. Scanned by artmisa using Canon DR2580C + flatbed option
Keywords: Quantum Physics; Dirac; Dirac Equation; Possion Brackets; Quantum Field Theory
Downloads: 966
[texts]Quantum particle dynamics - McConnell, J. (James)
Includes index
Keywords: Quantum theory; Nuclear physics; Quantum field theory; Théorie quantique; Mécanique quantique
Downloads: 18
[texts]B Mode Gravity Wave Evidence From 300, 000 Years After The Big Bang And Its Abuse By Inflationists - Nigel B. Cook
B-mode gravity wave evidence from 300,000 years after the big bang and its abuse by inflationists
Keywords: B-mode; gravity waves; quantum gravity; quantum field theory; Planck; radiation
Downloads: 5
[texts]Mechanism Of Renormalization Can Predict Particle Masses - Nigel B. cook
An improved mechanism for understanding the quantum field theory of fundamental particle masses is presented. Yoichiro Nambu, founder of QCD color charge, in 1952 argued in his paper "An Empirical Mass Spectrum of Elementary Particles" (Progress in Theoretical Physics, v7, 1952, pp. 595-6): "It seems to be a general conviction of current physicists that the theory of elementary particles in its ultimate form could or should give the mass spectrum of these particles just in the same way as quantu...
Keywords: quantum field theory; quantum gravity; particle masses; standard model; higgs field; higgs boson; electroweak
Downloads: 4
[texts]Chapter 6 The Chern-Simons Electro Magnetic Spin Density - Hans de Vries
The axial anomaly of the electron was discovered around 1969 by S. L.Adler, John S. Bell and R. Yackiw [1, 2, 3, 4, 5]. It was found that the axial current J�A of the electron (its spin) is not conserved independently. In order to conserve the spin and to keep electromagnetism as a local gauge theory, it is required by quantum perturbation theory that...
Keywords: Physics; Acoustics, Optics and Waves; Quantum Physics; Waves; Quantum Field Theory; Polarization; Physics
Downloads: 10
[texts]Quantum Condensed Matter Field Theory - Ben Simons
Outstanding free lecture notes on quantum field theory of condensed matter by Ben Simons (University of Cambridge).With lecture slides and problem sets.FreeScience.info ID: 975Obtained From:http://www.tcm.phy.cam.ac.uk/~bds10/tp3.htmlhttp://freescience.info/go.php?pagename=books&id=975Contents:PrefaceChapter 1: Collective Excitations: From Particles to FieldsChapter 2: Second QuantisationChapter 3: Feynman Path IntegralChapter 4: Functional Field IntegralChapter 5: Broken Symmetry and Collective...
Keywords: many-body physics; quantum field theory; condensed matter physics; FreeScience.info collection; lecture notes
Downloads: 149 5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars5.00 out of 5 stars(1 review)
[texts]Fields - Warren Siegel

Keywords: classical; physics; high energy and particle physics; quantum field theory; quantum; field theory; classical field theory
Downloads: 253
[texts]Manifestly Covariant Functional Measures for Quantum Field Theory in Curved Spacetime via Canonical Quantization - C. F. Richardson
It is shown that manifestly generally covariant functional measures can be derived from canonical quantization for quantum field theory in curved spacetime provided that the time slices used in constructing the functional integrals are equally spaced in physical time rather than in coordinate time and, similarly, discretization within time slices are chosen such that points are distributed uniformly in physical distances rather than in coordinate distances...
Keywords: functional measure; quantum field theory; curved spacetime; canonical quantization; quantum gravity
Downloads: 23
[texts]UV-Finite Gauge Theory and Quantum Gravity - C. F. Richardson
It is shown that UV-finite Lorentz covariant and gauge invariant quantum field theories can be constructed based on the premise that Lorentzian spacetime is emergent from a statistically averaged ensemble of discrete “pre-spacetimes” having Euclidean signature via a local Wick rotation. A continuum approximation to the underlying discrete theory is developed by expanding fields in terms of a finite number of eigenfunctions of an appropriate gauge covariant Laplacian...
Keywords: quantum gravity; quantum physics; quantum field theory; UV-finite; emergent spacetime; discrete spacetime; gauge theory
Downloads: 32
[texts]Self consistent automatic QFT predictions of particle masses 24 July 2014 revision - Nigel B. Cook
Self consistent automatic QFT predictions of particle masses 24 July 2014 revision Re-presentation of model on pp. 48-9 of vixra 1111.0111 U(1)xSU(2)xSU(3), QG successes: 1. Virtual fermions are radially polarized (driven further apart) by the electric field in which they formed. 2. This polarization supplies the virtual fermions energy, at the expense of electric field, which is thus partly “screened.” 3...
Keywords: quantum field theory; QFT; Higgs; Higgs boson; particle masses; Standard Model; String theory; renormalization; general relativity; Standard Model; MSSM
Downloads: 6
[texts]Non-Abelian Quantum Algebraic Topology (2010) - I.C. Baianu
80- page Monograph presenting the conceptual, recent developments of quantum theories, especially Algebraic Quantum Field theory.
Keywords: AQFT; QFT; QAT; algebraic quantum field theory; quantum field theories; non-Abelian Algebriac topology applications to quantum theories
Downloads: 131
[texts]Quantum Field Theory- Preliminaries- What You Need to Know - David Tong
Here I summarize the key concepts that you will need throughout this course. This will also serve to set conventions and notations. If you�re not comfortable with any of these concepts or terms, you should review a suitable book as soon as possible.
Keywords: Physics; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Physics
Downloads: 12
[texts]Quantum Field Theory- Quantum Electrodynamics - David Tong
In this section we �nally get to quantum electrodynamics (QED), the theory of light interacting with charged matter. Our path to quantization will be as before: we start with the free theory of the electromagnetic �eld and see how the quantum theory gives rise to a photon with two polarization states. We then describe how to couple the photon to fermions and to bosons.
Keywords: Physics; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Physics
Downloads: 25
[texts]Quantum Field Theory Lecture Notes - Quantum Field Theory - Roberto Casalbuoni
Aim of this course is to extend ordinary quantum mechanics, which describes nonrelativistic particles in interaction with given forces, to the relativistic case where forces are described by �elds, as for the electromagnetic case. The most relevant di_erences between the two cases are that the forces become dynamical degrees of freedom, and that one needs a relativistic treatment of the problem. In order to get a consistent description we will need to quantize the �eld degrees of freedom...
Keywords: Physics; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Physics
Downloads: 27
[texts]Quantum Field Theory- Quantizing The Dirac Field - David Tong
We would now like to quantize the Dirac Lagrangian. We will proceed naively and treat _ as we did the scalar �eld. But we�ll see that things go wrong and we will have to reconsider how to quantize this theory.
Keywords: Physics; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Physics
Downloads: 8
[texts]Quantum Field Theory- Interacting Fields - David Tong
Here we�ll start to examine more complicated theories that include interaction terms. These will take the form of higher order terms in the Lagrangian. We�ll start by asking what kind of small perturbations we can add to the theory. For example, consider the Lagrangian for a real scalar �eld,
Keywords: Physics; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Physics
Downloads: 9
[texts]Quantum Condensed Matter Field Theory- Lecture 8 - Quantum Antiferromagnetism - Ben Simons
We have seen that the quantum Heisenberg Ferromagnetic spin chain is characterised by a magnetically ordered ground state with free particle-like elementary spin wave excitations� magnons. What happens in the antiferromagnetic system?
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 6
[texts]Quantum Condensed Matter Field Theory- Lecture 14 - Coherent States - Ben Simons
Discuss element of PI construction which demands generalisation_ Generalisation of FPI to many-body systems problematic due to particle indistinguishability and statistics. Can second quantisation help? automatically respects particle statistics. Require complete basis on the Fock space to construct PI. Such eigenstates exist and are known as Coherent States
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 7
[texts]Quantum Condensed Matter Field Theory- Lecture 19 - Bose-Einstein Condensation - Ben Simons
Previously, we have seen how the functional �eld integral technique can be developed to explore the impact of the electronic degrees of freedom on the e_ective Coulomb interaction in a metal. However, our considerations did not engage any non-trivial mean-�elds: the platform of the non-interacting electron system remains adiabatically connected to that ofthe weakly interacting system. In the following we will explore a problem in which the development of a non-trivial ground state � the Bo...
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 6
[texts]Quantum Condensed Matter Field Theory- Lecture 17 - Weakly Interacting Electron Gas- Plasma Theory - Ben Simons
How are the properties of an electron gas in�uenced by weak Coulomb interaction? _ Qualitative considerations: When is the intereaction weak? De�ning
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Gauge Field Theories; Physics
Downloads: 5
[texts]Quantum Condensed Matter Field Theory- Lecture 3 - Quantising The Classical Field - Ben Simons
Having established that the low energy properties of the atomic chain are represented by a free scalar classical �eld theory, we now turn to the formulation of the quantum system.
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 6
[texts]Quantum Condensed Matter Field Theory- Lecture 6 - Tight-Binding and The Mott Transition - Ben Simons
According to band picture of non-interacting electrons, a 1/2-�lled band of states is metallic. But strong Coulomb interaction of electrons can lead to a condensation or crystallisation of the electron gas into a solid, magnetic, insulating phase � Mott transition. Here we employ the second quantisation to explore the basis of this phenomenon.
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 8
[texts]Quantum Condensed Matter Field Theory- Lecture 15 - Many-Body (Coherent State) Path Integral - Ben Simons
Could formulate many-body propagator (Green function), but here, convenient to focus on partition function.
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 5
[texts]Quantum Condensed Matter Field Theory- Lecture 4 - Second Quantisation - Ben Simons
We have seen how the elementary excitations of the quantum chain can be presented in terms of new elementary quasi-particles by the ladder operator formalism. Can this approach be generalised to accommodate other many-body systems? The answer is provided by the method of second quantisation � an essential tool for the development of interacting many-body �eld theories. The �rst part of this section is devoted largely to formalism �the second part to applications aimed at developing �ue...
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 6
[texts]General Field Theory- Chapter8 - Coherent State Path Integral Quantization of Quantum Field Theory - Eduardo Fradkin
Coherent States - Let us consider a Hilbert space spanned by a complete set of harmonic oscillator states...., with... Let...and...be a pair of creation and annihilation operators acting on that Hilbert space, and satisfying the commutation relations...
Keywords: Physics; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Theory of Quantized Fields; Field Theory; Physics
Downloads: 15
[texts]Quantum Condensed Matter Field Theory- Lecture 12 - Applications of the Feynman Path Integral - Ben Simons
Quantum Particle in a Single (Symmetric) Well:...
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Quantum Mechanics; Field Theory; Tunneling; Physics
Downloads: 4
[texts]Quantum Condensed Matter Field Theory- Functional Field Integral - Ben Simons
In this chapter, the concept of path integration is generalized to integration over quantum �elds. Speci�cally we will develop an approach to quantum �eld theory that takes a sits starting point an integration over all con�gurations of a given �eld, weighted by anappropriate action. To emphasize the importance of the formulation which, methodologiccally, represents the backbone of the remainder of the text, we have pruned the discussion to focus only on the essential elements...
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 8
[texts]Quantum Condensed Matter Field Theory- Lecture 5 - Second Quantised Representation of Operators - Ben Simons
So far we have developed an operator-based formulation of many-particle states. However,for this representation to be useful, we have to understand how the action of �rst quantised operators on many-particle states can be formulated within the framework of the second quantisation. To do so, it is natural to look for a formulation in the diagonal basis and recall the action of the particle number operator...
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Gauge Field Theories; Physics
Downloads: 7
[texts]Quantum Condensed Matter Field Theory- Lecture 13 - Double Well Potential- Tunneling and Instanton - Ben Simons
How can phenomena of QM tunneling be described by Feynman path integral?
Keywords: Physics; Condensed Matter; Particle Physics and Fields; Quantum Physics; General Theory of Fields and Particles; Quantum Field Theory; Field Theory; Physics
Downloads: 10
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